Toothbrush



Patented Apr. 1, 1930 UNITED STATES,

RALPH E. RAWSON, orsr. LOUIS, MISSOURI Application filed May 26,

My invention relates to improvements intooth brushes and has for its object to provide a clamp-carrying handle, in the clamp of which brushes or pads of various kinds and degrees of stiffness or resiliency may be interchangeably mounted. Said clamp is provided with a friction mounting, to adjust the pad or brush carried thereby at any desired angle 'with relation to the handle. The mounting of said clamp is so effected as to hold said clamp with sufficient rigidity to avoid accidental change of its angulation while in use.

An object of my invention is to reduce the cost of manufacture of the pad or brush to a minimum by so conforming the clamp and the back of the pad or brush that no extraneous mounting means need bemounted on or secured to such backs: thus reducing the cost of re-fills (either pads or brushes) to the minii 55 of Fig. 4.

Fig. 6 is a plan view of the looped terminal 7.

Fig. 7 is the view shown in Fig. 5 with the block B in place. Description As illustrated, the handle A is provided with a ferrule 6 from which the looped terminal 7 extends, provided with the eye 8 for the reception of the pin 9.

A channeled clamp 10 is centrally and rigidly mounted on the base of the pin 9, and rests snugly upon one face of the looped terminal 7.

Upon the opposite face of said looped teriees. Serial No. 230,689.

The block B is the backof either a pad or brush, and may be provided with grooves 1 l14: on its sides, for engagement with the pair of jaws 1515 of the clamp 10. The

block B is provided with an indentation 16 which is adapted to receive a depending tooth 17 formed in the clamp 10, thus holding the block B against slipping from its proper position in the clamp 10.

Various modifications of the structure "shown may be accomplished without depar ture from my actual invention as defined in the appended claims.-

I claim 1. A tooth brush comprising a handle having a flat terminal loop; a brush-holding clamp mounted upon one face of said loop;

a spring-washer mounted upon the opposite face of said loop; and a pin having a head resting upon the outer face of said washer,

same, a convex spring washer carried by the pin on the other side of the terminal end for drawing the clamp into positive frictional engagement with the end to resist swiveling movement thereof, and a brush detachably mounted in the clamp, and means for positively retaining said brush on the clamp to prevent accidental removal or displacement thereof.

3. A tooth brush comprising a handle having a relatively flat terminal end formed with an opening therein, a clamp on the end formed substantially U-shaped in cross section and having an elongated body, the edge flanges directed from the under side of the end and slightly bent inwardly toward each 5 other, a pin extending through the opening in the end and engaging the body of the clamp intermediate its ends to pivotally support the same on the end, a convex spring washer carried and normally retained under sustained m tension by the pin on the other side of the terminal end and having a countersunk portion receiving the head of the pin for drawing the body of the clamp into frictional positive engagement directly with the under side of the end to resist pivotal movement thereof irrespective of reasonable wear, and a brush having a back portion slidable to position be} tween the flanges of the clamp and frictional ly engaged thereby to resistdisplaceme1it, and means for positively retaining said brush in the clamp t'oprevent accidental removal or displacement thereof. f

In testimony whereof lrhave hereunto affixed my signature. v RALPH E. 'RAWVSON; 

